Automatic valve



' Feb. 4, 1930. F. A. BROWNE AUTOMATIC VALVE Filed Au 20, 1926 INVENTOR: Frank/iBmu/w, WTORNEYS.

Patented Feb. 4 1930 i TEs FRANK-A. BBOWNEQOF vvAYNEjr NNs LvANIA, nss e ri o tmo THE BARBER AsriiAL'r COMPANY, iOFl PI-IILADELPHIA;PENNSYLVANIA, A CORPORATION 01" WES YII t- JGIINIA.

"QA TOMATIC AIQVE Application filed August 192 Serial No.'13o,424,

V The invention relates to a valve especially adaptedv for useas thevautomatidcontrol valve in a circulatory" refrigerating system of the flooded type' that is'to say, a system in which a definite-quantity of refrigerant is com pressed, condensedinto liquid form, and after passingthrough the automatic valve is evap- Ol'tfl-ld-IEOfPUI'POfigS of refrigeration, and rei turned to the compressor. .Sueha valve automatically functions to control V the flow of liquid refrigerant from the high pressure The refrigerant passesth' ough the'autoconstantIThis heretofore been accomp s cle y a o t a iwh r t e peni or shutting of the valve is controlled bythen level of "liquid on one side "or the other.

' According to my invention thejopeni'ng 01 utting ofjthe va is d pe t upon. h weight of liquid refrigerant'in the boiler. When; a certain weight of liquid is attained inthe boiler a counterweight is dyer-balanced and fil sa u v c os d; .lWhen rap o' s sufficiently reducedthe weight of liquid in the boiler the valve opens; I W .7 Q

, Instead of utilizing the total weight 10f liquid inthe boilerto actuate the valve con-- trolling the flow ofjliquid into the chamber,

' the weight offa surplus of liquid above a though only a portion of operates the valve;

v wpredetermined amount is utilized to'actuate the valve. The operation is thus dependent (an-t e totalamount of liquid in theboiler the liquid actually By; my-econstruction, I, provide a compact and eflicient automatic ,fcontrol-for the'valve,

positive in V itsacti on and free :from any impediment ten'di'ngitofproduce inoperativene'ss,

, orrequiring attention to keep th'evalvejin order. Other objects and advantages Wil'l'be a piapentf from the f llowing description of atypicalembodiment o'fmy invention, while the s'iibj oi'ned claims serve to define those' fea Figl'is a longitudinal sectiofiof 'iny i111- pr'oved-automatic valve. v

Fig. is a section taken substantially as indicated by the larrowed lines II II in the preceding illustration, and; Fig. III is asimilarsectiononithelplane designated 'I-IIVIII inFigIjI'. 3*}

Referring more in-detail to the ,7 several views my automatic valve is enclosed *in' a boileror fevaporator casing 5, conveniently 'of'cylindrical form, with one end 6 'perma-.

nently closed in, while theater is fitted with a removable head '7' secured thereto in' any of the well known ways. Theiremovablehead '7'as' well as the cylindrical shell flange 8- is of comparatively heavy section, LW hereaS the other portions are relatively thin. head 7 is provided with an open top dished "compartment 9 having a lateral lip or'weir '10. The liquid refrigerant is conducted from any suitable source by way of a conduit '11 into thetube 12 supportedibyfth'e removable head 7. 1

@The tube 12 forms'what is termed the freezing chamber. The conduit ll enters" the same at its upper portions o that "any Twatercon system and by it the'refrigerating medium-1 is admitted from said freezing chamber '12 teth' bo le 5-, wh h ,i nst t t srar of mel ow-Press re efr e i elem n of the ys m; wh in "th l quid Lb'Qi1$,...Qfi into vapor; The valve opening whichis controlled,

by the automatic valve is below the' normal I vel of thal qui re r gerant i V heboi ;Thi' prevents th'el liquid refrigerantlfroin ashing infect) vap r at th val e t- 1 pThre'rr pr lqqetre g efe heyiielie 1.5 isle?- complished by "Ta;pendulum member 16' pive a 1 b t en n l d\ rk i ites a vvith'the fitting 13 aforesaid," Supported by tts pendu i ember- 161s a; longitudinally directed 'rod19 whiclr'has rigid1ysecured to its outer end 20, an open-top pan 21 made of thin sheet material and adapted to rise and fall within the dished compartment 9. Ad-

justably secured on the inner end of the rod 19 is a counterweight 22 which is functional to over-balance the pan, 21 when there is little or no. liquid therein, as. later on explained. 23 indicates the return connection.

from theboiler 5. to the compressor.

Theoperation of my, novel automatic valve. is briefly as follows :-Assuming that the boiler 5 is gradually filling with. liquid. it. will be obvious that when it rises to the level of the weir 10 it"will flow thereoverinto. the open-top pan 21 and partly fill the same; or, to a sutficiententent+such= as indicated in Fig. Iso that the added weight wilioverba anee t e e n i ht 22 nd r ek; t niem er nw rd y e by; i fie ting e sure of the valve. I5, Incidentally the. pan 21,..ijs; prevented. from rising too. high by contacting with the weir 10 as willbe understood from; Fig. I. Closing of the valve 15: automaticallyv discontinues furtherflo wof re.-

frigerantintothe boiler 5 and;,;by-evapora- V tioni, the liquidin the pan 21', will be. gradu+ v includes a; reeeptaqlesituatedj mee at a d. an i ar ed aee eive v r- I flew th eir o? fi t eeere t- 'the by exterior liquid. that would causev it to The pan21 is of a. cubic. contentsufiic-ient to. effectively preclude. its ever beingfilled to an overflow level. Any condensation finding. its way in to.o r settling. inr.the dished compartment 9.. is the. more. promptly dissipated because .thecompartment connects withfthehead'z which is anactiveconductor ofheat.

While I, have .shown a. particular constructionof. my novel automatie control valve-it is .to be understood; theidetaiis as tefor n and a rang ent i h Pa s hereof; us-

ceptible of variation within the scope of the claims; 1

Hav ng thusdescr bed, my. innention I claim: i

L. A iui 1 am. ha a vede tran ag empa t nent a he ehamb h wiilaaw i and a. control for; the valved; entrancewhich he omner lnt omb nat r i entrance and on evaporation of said overflow to reopen said entrance.

2. 'An automatic fluid boiler embodying a valved entrance, a dished compartment in the boiler having a Weir, and a control for the entrance comprising a member actuated by. an open-top pan in the dishedzcompartment receiving overflow of fluid over the weir and by. evaporation. of. said overflow.

' 3; An automatic fluidboiler embodying an entrance for the boiler, a dished compartment in theboiler having a weir, a control for the aforesaid entrance embodying a counterbalanced member functional to open the entrance aforesaid; and co-ordinated means in. the shed wmeee me t nflue d y overflow over theweirtoelose-sard entrance. 4. An automatic refrigerant holler em bodying a substantially closed-in. chamber with an outlet at. its upper. level; into. the boiler, 21. dished compartment in the boiler having aweir, a. dischargecontrol for the aforesaid outlet embodying a, coiinterbal: anced pivoted member functional. to, open the outlet. aforesaid, and a. corordinatedg pan in. the dished compartmentiadapted to receive overflow over the weir. tocl'ose; saidgoutletz.

5. In a refrigeratingsystem an; automatic valve admitting liquid refrigenant-toa re frigerating. compartment on. thelow pressure sideand in which said liquid is;e.vaporated;

' another evaporating compartment subject to thetsame low. pressureinto; which the liquid overflows upon reaching a predetermined level in the. first mentioned refrigerating com partment a. panin the latter "compartment receiving said overflow and actuating-- means for the. automatic valve whereby said; overflow. closes it and whereby evaporation offche overflow'reopens; it.

6. In combination, a chamber having an entrance through which. volatile liquid may flow into the chflmbenawalvecontrollingflow through the entrance, a, receptacle arranged to receive. liquid from the chamber when he evel of. hel quid n t e chamber 7 reaches; a predetermined height, and nQVable by the .weightofsuch receivedgl iquidg'to, close the valve. r

In. nbi a e i afehamb iiav ng, n entrance. through which volatile liquid; may 7 flow intothe. chamber; a valve'controlling flow through the entrance; and a; receptacle arranged to receiveliquid from the chamber when the level of, the liquid inthe: chamber 7? reaches :a predeterminedfheight andiriiiovabl'e by the-weight iof suchareceivedaliquidato:close thevalve:-,- said receptacle moving oppositely upon evaporation of neceivedyliquiditoeclose hev hve,

entrance; th euehi hie r ela iieliquid: may flow; mm he: h mbe s valve contnel ing w t reuahhe-entrance, a: reeepta le ranged to receive liquidi theiehanrber' qhamb r hav ng an i When the level ofthe liquid i the h r f reachesa predetermined height and movable by the Weight of such received liquid to close thex'valve, and adjustable" means resisting movement of the receptacle under theweight of received liquid.

In testimony whereof, I have hereunto signed my name at Philadelphia, Pennsylvania', this '5thday of August, 1926. 4

1 V FRANK AL-BROWNE. 

